Chemical Precursor
Inorganic compounds consisting of lithium and hydroxyl groups provide a primary feed for the synthesis of high nickel cathode materials. Lithium hydroxide is preferred over lithium carbonate for certain battery chemistries because it facilitates easier decomposition during the calcination process. This material is typically produced through the conversion of lithium sulfate or by reacting lithium carbonate with calcium hydroxide.
Synthesis Process
Production facilities for lithium hydroxide are often located near spodumene mines or brine extraction sites to minimize transportation costs. The refined powder must be stored in specialized moisture proof containers because it is hygroscopic and reacts with carbon dioxide in the air. High purity levels are required for battery applications to ensure the longevity and safety of the final energy storage device.
Filtration systems remove magnetic particles and trace metals during the final crystallization stage.
Thermal Stability
Market demand for lithium hydroxide has risen as automakers move toward longer range vehicles that utilize nickel rich batteries. Prices for this specific chemical often carry a premium relative to other lithium salts due to the additional processing steps required. Industry analysts monitor global refining capacity to predict if the supply of this precursor will meet the needs of the expanding electric vehicle sector.